Dust-guard for railway journal-boxes.



PATENTED JULY 11, 1905.

T. H. SYMINGTON.

DUST GUARD FOR RAILWAY JOURNAL BOXES.

APPLICATION 3mm) JULY 18,1904.

3 x we" fox UNITED STATES Patented July 11, 1905.

PATENT OFFICE.

THOMAS H. SYMINGTON, OF BALTIMORE, MARYLAND, ASSIGNOR TO T. H. SYMINGTONCOMPANY OF DELAWARE.

DUST-GUARD FOR RAILWAY JOURNAL-BOXES.

SPECIFICATION forming part of Letters Patent No. 794,260, dated July 11,1905.

Application filed July 18, 1904. Serial No. 217,119-

To all 1071 0777, it 711151.7 concern.-

Be it known that I, THoMAs H. SYMINGTON, a citizen of the United Statesof America, and a resident of 706 St. Paul street, city of Baltimore,and State of Maryland, have invented certain new and useful Improvementsin Dust- Guards for Railway Journal-Boxes, of which the following is aspecification.

My invention relates to certain new and useful improvements indust-guards for railway journal-boxes.

The object of my invention is to cheapen the cost of constructing bothjournal-boxes and dust-guards and make the guard more perfectly preventthe entrance of dust to the box than has heretofore been possible.

The subject-matter of this application is shown and claimed broadly inmy companion application, Serial No. 227 ,17 6, filed October 3, 1904:.

My invention comprises certain combination of parts, the preferred formof which will be first specifically described and the invention thenpointed out in the claims.

Referring to the drawings, wherein the same part is designated by thesame referencenumeral wherever it occurs, Figure 1 is a longitudinalsectional view of the rear part of the journal-box provided with myimproved guard. Fig. 2 is a sectional view similar to Fig. 1, taken atright angle to Fig. 1. Fig. 3 is a View of the back of a journal-boxprovided with my dust-guard.

1 designates a journal-box of any desired form. This box is provided atits rear with an opening 2, through which passes the axle of the car.Around opening 2 I form a raised surface 3, the face of which ispreferably machined and forms the bearing-face against which thedust-guard is pressed. The opening 2 is larger than the axle, as iscustomary.

4 designates a ring, which has an opening 5 therein of practically thediameter of the axle, the opening 5 being slightly greater than thediameter of the axle in order that the axle may turn independently ofthe ring.

6 designates a pair of springs, each of which is preferably bent into apair of coils 7, as is The openings 10 are located in such a positionthat the loops 8 of the springs when they are in position press againstthe rear face of the dust-guard ring, holding the ring against thesurface 3 on the box. It will be seen that by this construction thenecessity for a dust-guard well is entirely done away with, cheapeningthe cost of manufacturing a journal-box, and as the guard consistsmerely of a single metal ring and two springs the cost of constructingthe guard is materially lessened.

While I have described what I believe to be the preferred form of myinvention, I desire to have it understood that many changes may be madein the form, construction, and arrangement of parts without departingfrom the spirit of my invention.

Having thus described my invention, what I claim, and desire to besecured by Letters Patent, is-

1. A journal-box provided with an opening in its rear end through whichthe axle projects into the box, a dust-guard ring encircling the axleoutside the box, and a spring bent into a pair of coils connected by aloop,

the spring being secured to the box by its by their own elasticity, theloopof the spring resting against the ring whereby the ring is heldagainst the box.

3. A journal-box provided with an opening in its rear end through whichthe axle projects into the box, a dust-guard ring encircling the axleoutside the b0x,a pair of springs, each spring being bent into a pair ofcoils connected bya loop, the springs being secured to the sides of thebox by their ends engaging the box and the loops resting against thering whereby the ring is held against the box.

4. A journal-box provided with an opening in its rear end through whichthe axle projects into the box, a dust-guard ring encircling the axleoutside the box,a pair of springs,

THOMAS H. SYMINGTON.

Witnesses:

E. JOHN NIoHoLs, T. BAYARD WILLIAMS.

